// SPDX-License-Identifier: GPL-2.0

#include <errno.h>
#include "../../util/debug.h"
#ifndef REMOTE_UNWIND_LIBUNWIND
#include <libunwind.h>
#include "perf_regs.h"
#include "../../util/unwind.h"
#endif

#ifdef HAVE_ARCH_X86_64_SUPPORT
int LIBUNWIND__ARCH_REG_ID(int regnum)
{
        int id;

        switch (regnum) {
        case UNW_X86_64_RAX:
                id = PERF_REG_X86_AX;
                break;
        case UNW_X86_64_RDX:
                id = PERF_REG_X86_DX;
                break;
        case UNW_X86_64_RCX:
                id = PERF_REG_X86_CX;
                break;
        case UNW_X86_64_RBX:
                id = PERF_REG_X86_BX;
                break;
        case UNW_X86_64_RSI:
                id = PERF_REG_X86_SI;
                break;
        case UNW_X86_64_RDI:
                id = PERF_REG_X86_DI;
                break;
        case UNW_X86_64_RBP:
                id = PERF_REG_X86_BP;
                break;
        case UNW_X86_64_RSP:
                id = PERF_REG_X86_SP;
                break;
        case UNW_X86_64_R8:
                id = PERF_REG_X86_R8;
                break;
        case UNW_X86_64_R9:
                id = PERF_REG_X86_R9;
                break;
        case UNW_X86_64_R10:
                id = PERF_REG_X86_R10;
                break;
        case UNW_X86_64_R11:
                id = PERF_REG_X86_R11;
                break;
        case UNW_X86_64_R12:
                id = PERF_REG_X86_R12;
                break;
        case UNW_X86_64_R13:
                id = PERF_REG_X86_R13;
                break;
        case UNW_X86_64_R14:
                id = PERF_REG_X86_R14;
                break;
        case UNW_X86_64_R15:
                id = PERF_REG_X86_R15;
                break;
        case UNW_X86_64_RIP:
                id = PERF_REG_X86_IP;
                break;
        default:
                pr_err("unwind: invalid reg id %d\n", regnum);
                return -EINVAL;
        }

        return id;
}
#else
int LIBUNWIND__ARCH_REG_ID(int regnum)
{
        int id;

        switch (regnum) {
        case UNW_X86_EAX:
                id = PERF_REG_X86_AX;
                break;
        case UNW_X86_EDX:
                id = PERF_REG_X86_DX;
                break;
        case UNW_X86_ECX:
                id = PERF_REG_X86_CX;
                break;
        case UNW_X86_EBX:
                id = PERF_REG_X86_BX;
                break;
        case UNW_X86_ESI:
                id = PERF_REG_X86_SI;
                break;
        case UNW_X86_EDI:
                id = PERF_REG_X86_DI;
                break;
        case UNW_X86_EBP:
                id = PERF_REG_X86_BP;
                break;
        case UNW_X86_ESP:
                id = PERF_REG_X86_SP;
                break;
        case UNW_X86_EIP:
                id = PERF_REG_X86_IP;
                break;
        default:
                pr_err("unwind: invalid reg id %d\n", regnum);
                return -EINVAL;
        }

        return id;
}
#endif /* HAVE_ARCH_X86_64_SUPPORT */